AbstractIn this paper, we present a new version of theiQIST software package, which is capable of solving various quantum impurity models by using the hybridization expansion (or strong coupling expansion) continuous-time quantum Monte Carlo algorithm. In the revised version, the software architecture is completely redesigned. New basis (intermediate representation or singular value decomposition representation) for the single-particle and two-particle Green’s functions is introduced. A lot of useful physical observables are added, such as the charge susceptibility, fidelity susceptibility, Binder cumulant, and autocorrelation time. Especially, we optimize measurement for the two-particle Green’s functions. Both the particle–hole and particle–particle channels are supported. In addition, the block structure of the two-particle Green’s functions is exploited to accelerate the calculation. Finally, we fix some known bugs and limitations. The computational efficiency of the code is greatly enhanced.New version program summaryProgram Title:iQISTProgram Files doi:展开▼
机译：<！[cdata [ Abstract 在本文中，我们介绍了一个新版本的 i qist软件包，其能够通过使用杂交膨胀（或强耦合膨胀）连续时间量子蒙特卡罗算法来解决各种量子杂质模型。在修订版中，软件架构完全重新设计。引入了单粒子和双粒子绿色功能的新基础（中间代表或奇异值分解表示）。添加了许多有用的物理观察，例如电荷敏感性，保真易感性，粘合剂累积剂和自相关时间。特别是，我们优化了双粒子绿色功能的测量。粒子孔和颗粒粒子通道都被支撑。此外，利用双粒子绿色功能的块结构来加速计算。最后，我们修复了一些已知的错误和限制。代码的计算效率大大增强。 新版本程序摘要 程序标题： i qist 程序文件doi：< / ce：斜体> 展开▼
